EP2872808B1 - Pipe clamp - Google Patents
Pipe clamp Download PDFInfo
- Publication number
- EP2872808B1 EP2872808B1 EP13753546.4A EP13753546A EP2872808B1 EP 2872808 B1 EP2872808 B1 EP 2872808B1 EP 13753546 A EP13753546 A EP 13753546A EP 2872808 B1 EP2872808 B1 EP 2872808B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bracket
- pipe clamp
- clamp
- pipe
- recess
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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- 239000011324 bead Substances 0.000 description 20
- 239000002184 metal Substances 0.000 description 5
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- 239000000463 material Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010409 ironing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
- 239000013598 vector Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
- F16L3/1075—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing with two members, the two members being joined with a hinge on one side and fastened together on the other side
Definitions
- the present invention relates to a pipe clamp for gripping and holding a pipe or hose.
- a pipe clamp has a clamp body which is designed to enclose and hold a pipe in a substantially circular manner.
- the clamp body is often connected to a thread, by means of which it can be connected directly or indirectly, for example, with a wall or a ceiling of a building or with a profile support.
- the clamp body has, for example, a closable by means of a clamping screw opening and an opposite hinge.
- a tube can be inserted through the opening in the clamp body. By tightening the screw, the clamp body is pressed to the outside of the tube.
- Pipe clamps on the one hand should be inexpensive to produce and be able to be installed and handled quickly and safely by craftsmen, ideally without any training time. There are numerous different types, each having specific advantages and disadvantages.
- a clamp for attaching a component to a rod or pipe.
- the clamp comprises two parts, which may comprise a tube. On the first part is an outwardly projecting rib, on the second part is a hook-shaped projection with an inwardly open groove into which the rib can engage provided.
- An object of the present invention is to provide an improved pipe clamp, in particular a pipe clamp, on the one hand as inexpensive to produce and on the other hand as simple, fast and safe to handle and robust.
- the pipe clamp must be able to be opened and closed in at least one place in order to insert a pipe (or hose) into the pipe clamp and remove it from the pipe clamp.
- a flexible clamp body is usually out of the question.
- each rigid bracket In the case of a rigid, non-bendable clamp body two or more forming the clamp body, each rigid bracket must be hinged.
- Embodiments of the present invention are based on the idea to distribute the three functions mentioned - closure, joint and tensioning device - unlike in the prior art on the ends of two brackets of a pipe clamp.
- First ends of the two brackets are connected by a clamping device, in particular a clamping screw with each other, which also acts as a hinge.
- the second ends of the stirrups are by hook means connectable to each other, in particular, only have the function of a closure and are not provided for clamping the pipe clamp.
- the hook devices can therefore be much simpler or constructively formed much less expensive than, for example, the locking device according to the mentioned DE 42 37 674 A1 ,
- a clamp includes a clamp body having a first bracket and a second bracket for engaging and holding a pipe or hose, tensioning means for connecting and contracting a first end of the first bracket and a first end of the second bracket, a first hook means is formed integrally with the second end of the first bracket, and a corresponding second hook means, which is integrally formed with the second end of the second bracket, for positively connecting the second ends of the bracket.
- Each stirrup is in particular designed to substantially completely enclose the tube or tube in each case in order to allow the tube or tube to be inserted into the clamp and removed therefrom.
- the first bracket and the second bracket are each substantially semicircular in shape.
- the two brackets may each be non-circular arc-shaped and adapted to the contour of the cross section of the pipe or hose to be encompassed and held.
- the tensioning device comprises a tensioning screw which, for example, engages through a hole or through opening on one of the two brackets and engages in an internal thread on the other of the two brackets.
- the hole or the passage opening is in particular formed so that a mechanical clearance of the clamping screw in the hole or the passage opening enables a movement of the associated bracket relative to the clamping screw.
- the hook means do not have to have the function of a clamping device at the same time, they can be structurally particularly simple be. This may be advantageous in terms of the cost and cost of manufacture as well as the mechanical robustness of the clamp.
- the hook devices can be designed so that the second hook device can be easily, quickly and safely hooked into the first hook device, in particular with only one hand.
- the first hook device is rigidly arranged on the first bracket and the second hook device is rigidly mounted on the second bracket.
- a solid-state joint or other substantially elastic portion is provided.
- the aforementioned one-piece has the consequence that no other joint is provided.
- Rigid in the sense of the present description is a mechanical connection or a mechanical structure despite the inherent elasticity of each material and therefore also each real component, if the elastic (or plastic) deformability is structurally not in the foreground, in particular no desired or required for the function or advantageous property.
- a rigid arrangement of the first hook device on the first bracket and a rigid arrangement of the second hook device on the second bracket can allow a structurally particularly simple and mechanically particularly robust embodiment of the pipe clamp.
- the first hook device is formed by a bent edge portion at the second end of the first bracket.
- the second hook device is formed by a bent edge portion at the second end of the second bracket.
- the edge portions are each bent by more than 90 degrees, for example by an angle in the range of 120 degrees to 180 degrees or in the range of 150 degrees to 180 degrees, to a positive connection of the second ends of the bracket not only in the sense of an unstable , but in the sense of a stable mechanical-geometric balance to allow.
- the edge sections can each be bent round (in particular circular arc-shaped) or angularly. In terms of the mechanical strength of the bent-over edge section, a curvature that is as constant as possible without pronounced local curvature maxima may be advantageous.
- edge sections are respectively bent such that in the bent region all radii of curvature are perpendicular or substantially perpendicular to the central axis of the pipe clamp or to the axis of symmetry of a pipe or hose inserted in the pipe clamp.
- edge portion at the second end of the second bracket inwardly (to a tube inserted into the pipe clamp back) and the edge portion at the second end of the first bracket are bent outwardly or vice versa.
- the second end of the first bracket and the second end of the second bracket are in particular designed to move in the intended positive connection of the hook means a movement of the second ends of the bracket relative to each other in the direction parallel to the central axis Prevent clamps with positive locking.
- the central axis of the pipe clamp is in particular the axis of symmetry of an inserted into the pipe clamp circular cylinder jacket-shaped tube. If the pipe clamp is stretched, can exist between the hook means for relative forces parallel to the central axis a frictional connection. In particular, before the clamping of the clamp, a positive closure of a relative movement parallel to the central axis can significantly simplify handling.
- a pipe clip as described herein further includes a protruding portion at the second end of the second bracket adapted to engage a recess at the second end of the first bracket.
- the clamp may include a protruding portion at the second end of the first bracket adapted to engage a recess at the second end of the second bracket.
- the projecting area is in particular nose-shaped or tongue-shaped.
- the projecting area is in particular curved, in particular in such a way that substantially all the radii of curvature at the projecting area are perpendicular or substantially perpendicular to the central axis of the pipe clamp or to the axis of symmetry of a pipe or hose inserted into the pipe clamp.
- the projecting area is in particular L-shaped and / or hook-shaped or substantially L-shaped and / or hook-shaped in order to engage in the recess.
- the recess is formed in the shape of a window-shaped opening or a through-hole.
- the projecting portion and the recess may be further formed to receive a part of the tensile force between the brackets.
- the protruding portion engaging in the recess may be provided and formed as a latching aid or a suspension aid for connecting the two hook means to the second ends of the stirrups.
- the engagement of the projecting portion in the recess may cause a correct relative alignment of the second ends of the stirrups and thus directly or indirectly also a correct positive connection of the hook means to the second ends of the stirrups.
- the engagement of the projecting portion into the recess may prevent or hamper relative movement of the second ends of the stirrups in the direction parallel to the central axis of the pipe clip.
- engagement of the protruding portion into the recess may indicate correct relative alignment of the second ends of the stirrups and / or correct positive engagement of the hook means at the second ends of the stirrups.
- the projecting portion is tongue-shaped and provided to be in a Intervening space between the first bracket and a tube inserted into the pipe clamp.
- the tongue-shaped area is formed in particular as a strip-shaped and curved tongue at the second end of the second bracket.
- the tongue-shaped area is in particular angled.
- the tongue-shaped area is, for example, substantially L-shaped or substantially angled in an angled manner, so that the tongue-shaped area can reach through the recess and the end of the tongue-shaped area can rest parallel or substantially parallel on the first bracket of the pipe clamp.
- the tongue-shaped area can be squeezed between the first bracket and a tube inserted into the pipe clamp and thereby positively held in its intended position. This can prevent or hinder unintentional opening or popping of the pipe clamp.
- the recess is delimited, in particular in the axial direction, by two beads projecting towards the outside of the pipe clamp.
- the outside of the pipe clamp is the side facing away from a pipe inserted into the pipe clamp or radially outwardly oriented side of the clamp, in particular of their ironing.
- Axial directions are the two parallel to the already mentioned center axis of the pipe clamp directions.
- the beads limit the recess in the axial direction, by being directly adjacent to edges of the recess or only have a small distance to this. A distance is small if it is not greater than radii of curvature at surfaces on the projecting portion, which can touch the edges of the recess and the beads. In particular, flanks of the beads simultaneously form edges of the recess.
- the described configuration of the recess and the beads may allow a guiding action of the beads during insertion of the projecting portion into the recess. This guiding effect can simplify the handling of the pipe clamp, especially when closing.
- the clamping device connects the first end of the first bracket with the first end of the second bracket articulated.
- the clamping device comprises in particular a screw which engages through a slot at the first end of the second bracket and engages in a thread at the first end of the first bracket.
- the slot is arranged in particular in a flange at the first end of the second bracket.
- the thread is arranged in particular in a flange at the first end of the first bracket.
- Flanges are each in particular designed so that they each protrude substantially perpendicular or in the radial direction of the associated bracket.
- the slot is in particular designed so that it allows pivoting of the second bracket relative to the first bracket about an axis parallel to the central axis of the pipe clamp by an angle of at least 45 degrees, in particular about 60 degrees.
- the length I of the slot must thus have at least about 1.4 times the diameter d of the thread of the screw to allow a pivoting angle of 45 degrees.
- a recess for at least partially receiving the head of the screw is provided in particular at the first end of the second bracket.
- the recess is produced in particular by deep drawing or embossing and in particular on the aforementioned flange at the first end of the second bracket.
- the recess is in particular substantially circular and has a diameter which is not or not substantially greater than the diameter of the head of the screw. If the recess receives the head of the screw with little or no play, this may cause a positive locking of the second bracket relative to the screw, which prevents or limits a movement of the second bracket parallel to the slot. This can - with sufficiently stiff designed ironing - a positive connection of the hook means are locked to the second ends of the bracket.
- a recess for at least partially receiving of the head of the screw simplify pre-assembly.
- at least the first ends of the stirrups are movable relative to one another in the direction parallel to the oblong hole. Due to the at least partially receiving the head in the depression, this relative movement of the first ends of the bracket and thus also the entire bracket can be positively or partially prevented completely. In turn, this can prevent inadvertent release of the connection of the hook means at the second ends of the bracket, that is an unintentional cracking of the clamp, or at least made much less likely.
- the recess can thus allow a significant simplification of the pre-assembly.
- pipe clamps with the features described here achieved a time saving of up to 70 percent compared to conventional pipe clamps for comparable applications.
- the first hook device and the second hook device in particular do not form a latching connection.
- the pipe clamp differs in particular from the mentioned in the DE 42 37 674 A1 described clamp.
- FIG. 1 shows a schematic axonometric view of a pipe clamp 10 with a fastening nut 16 for fixing the pipe clamp 10 to a threaded rod or to another component with a corresponding external thread.
- the pipe clamp comprises a first bracket 20 and a second bracket 30, which are each formed substantially semicircular arc.
- the fastening nut 16 is fixed substantially in the middle of the first bracket 20, in particular welded thereto.
- the brackets 20, 30 are in particular made of sheet metal by punching and by means of one or more forming processes.
- the first bracket 20 and the second bracket 30 each have a plurality of slots 14 for receiving or attachment of elastic elements, which are not shown in Figure 1.
- These elastic elements can have several functions, in particular the acoustic decoupling of the pipe clamp 10 from a tube or hose held by the pipe clamp 10, increasing the friction between the pipe clamp 10 and a tube or hose held by the pipe clamp 10 and / or compensating geometric differences corresponding surfaces on the inside of the pipe clamp 10 and on the outside of a pipe or tube held by the pipe clamp 10.
- the first bracket 20 has a first end 21 and a second end 22. At the first end 21 of the first bracket 20, a flange 24 is provided with an internal thread 26. At the second end 22 of the first bracket 20, a hook means and a recess are provided, which below with respect to the FIG. 4 are described in more detail.
- the second bracket 30 has a first end 31 and a second end 32. At the first end 31 of the second bracket 30, a flange 34 is provided. In the flange 34 at the first end 31 of the second bracket 30, a slot is provided which in FIG. 1 is not visible. On the flange 34 at the first end 31 of the second bracket 30, a recess is further provided, which also in FIG. 1 is not visible. At the second end 32 of the second bracket 30, a hook means and a tongue are provided, which are described below with reference to FIG FIG. 4 are described.
- beads 50 are provided which stiffen the bracket 20, 30 to save material.
- the beads 50 are directed outward or oriented away from a recorded in the pipe clamp 10 tube or hose away.
- the beads 50 may have other functions and tasks, such as a positive connection with the one or more elastic elements mentioned.
- FIG. 2 shows a further schematic axonometric representation of the pipe clamp 10 FIG. 1 , In contrast to FIG. 1 are in the line of sight or the observer's point of view FIG. 2 the previously mentioned slot 36 and the aforementioned recess 38 on the flange 34 at the first end 31 of the second bracket 30 recognizable.
- the slot 36 extends perpendicular to the central axis 18 of the pipe clamp 10.
- the length of the slot 36 is larger in the illustrated example than the diameter of the substantially circular recess 38.
- the recess is located in the illustrated example substantially in the middle of the slot 36th
- 30 is the axis of the internal thread 26 (cf. FIG. 1 ) aligned with the flange 24 at the first end 21 of the first bracket 20 substantially centrally of the slot 36 and the recess 38 on the flange 34 at the first end 31 of the second bracket 30.
- a recess 49 is provided in the form of a rectangular window. Further features and characteristics of the brackets 20, 30 at their second ends 22, 32 are described below with reference to FIG FIG. 4 described in more detail.
- FIG. 3 shows a further schematic axonometric representation of the pipe clamp 10 from the Figures 1 and 2
- FIG. 3 shows the pipe clamp 10 from a further line of sight or from a further observer location in order to further improve the recognizability of the already described properties and features of the pipe clamp 10.
- FIG. 4 shows a schematic axonometric representation of a portion of the pipe clamp 10 from the FIGS. 1 to 3 .
- the representation in FIG. 4 is opposite to the representations in the FIGS. 1 to 3 increases and shows substantially only the second ends 22, 32 of the bracket 20, 30.
- the recess 49 at the second end 22 of the first bracket 20 and a plurality of beads 50 can be seen, which are mentioned above.
- FIG. 4 recognizable further properties and features, which are described below.
- the first bracket 20 has at the second end 22 a first hook means 42 in the form of two bent edge portions 23.
- the second bracket 30 has at the second end 32 a second hook device 43 in the form of two bent edge portions 33.
- the edge portions 23, 33 are each bent at an angle between 150 degrees and 170 degrees.
- the bent edge portions 23, 33 each have a substantially constant curvature, with all the curvature vectors perpendicular to the central axis 18 of the pipe clamp 10 (see. FIGS. 1 to 3 ) are.
- the bent edge portions 23, 33 of the bracket 20, 30 each have arcuate cross-sections.
- the edge portions 23 at the second end 22 of the first bracket 20 are bent outwardly, the edge portions 33 at the second end 32 of the second bracket 30 are bent inwardly.
- the second bracket 30 is cranked at the second end 32 near the bent edge portion 33.
- the bent edge portions 23 at the second end 22 are symmetrically arranged on the first bracket 20 as well as beads 50.
- the bent edge portions 33 at the second end 32 of the second bracket 30 are symmetrically arranged on the second bracket 30 as well as beads 50.
- a bent edge portion 23 at the second end 22 of the first bracket 20 and a bent edge portion 33 at the second end 32 of the second bracket 30 are formed and arranged correspondingly.
- a tongue 48 is provided, which is formed integrally with the second bracket 30.
- the tongue 48 is angled and has a cross-section which corresponds to the window-shaped recess 49 at the second end 22 of the first bracket 20.
- FIGS. 1 to 4 the pipe clamp 10 is shown in a closed state.
- the bent edge portions 23, 33 engage at the second ends 22, 32 of the brackets 20, 30 in such a way that the second ends 22, 32 of the brackets 20, 30 are positively connected.
- the bent edge portions 33 are hooked on the second end 32 of the second bracket 30 in the bent edge portions 23 at the second end 22 of the first bracket 20.
- the tongue 48 and the recess 49 may be formed so that by positive engagement of the tongue 48 with the recess 49, a portion of a tensile force between the brackets 20, 30 can be accommodated.
- a mechanical interaction between the tongue 48 at the second end 32 of the second bracket 30 with the beads 50 on the first bracket 20 further when closing the clamp 10 a correct relative orientation of the second ends 22, 32 of the bracket 20, 30 support.
- FIG. 5 shows a further schematic representation of the pipe clamp from the FIGS. 1 to 4 .
- the representation in FIG. 5 corresponds to a plan view of the clamp 10 parallel to the central axis 18.
- the plane of the drawing FIG. 5 perpendicular to the central axis 18.
- the beads 50 are in FIG. 5 Not shown.
- FIG. 5 a contour indicated by the pipe clamp 10 to be comprehensive and to be held pipe 12 and a clamping screw 60 is shown.
- the clamping screw 60 has a head 62 and a thread 64.
- the clamping screw 60 engages through the slot 36 on the flange 34 at the first end 31 of the second bracket 30 (see. FIG. 2 ) and into the corresponding internal thread 26 on the flange 24 at the first end 21 of the first bracket 20 a.
- the slot 36 is so long that the second bracket 30 can be pivoted relative to the first bracket 20 in a large angular range about a pivot axis parallel to the central axis 18.
- the second bracket 30 is shown in a position in which the pipe clamp 10 is wide open and the tube 12 can be inserted into the pipe clamp 10 or removed from this.
- FIG. 6 shows a further schematic representation of the pipe clamp 10 from the FIGS. 1 to 5 .
- the type of representation corresponds largely to that of FIG. 5 ,
- the drawing plane is the FIG. 6 perpendicular to the central axis 18 of the pipe clamp 10th
- FIG. 6 shows the clamp 10 in a configuration just prior to closing the clamp. From the in FIG. 5 shown configuration up to the in FIG. 6 As shown, the second bracket 30 is pivoted about an axis parallel to the central axis 18 of the pipe clamp 10, that the second ends 22, 32 of the bracket 20, 30 toward each other and finally the hook means 42, 43 are moved past each other.
- FIG. 7 shows a further schematic representation of the pipe clamp from the FIGS. 1 to 6 , which in terms of the type of presentation the Figures 5 and 6 equivalent.
- the drawing plane is the FIG. 7 perpendicular to the central axis 18 of the pipe clamp 10th
- FIG. 7 shows a configuration of the pipe clamp 10, in which the hook means 42, 43 at the second ends 22, 32 of the bracket 20, 30 are already positively connected or hooked into each other.
- the clamping screw 60 is still in the position in which they also in the Figures 5 and 6 is shown.
- FIG. 8 shows a further schematic representation of the pipe clamp from the FIGS. 1 to 7 , which in terms of the type of presentation the FIGS. 5 to 7 equivalent.
- the plane of the drawing is perpendicular to the central axis 18 of the pipe clamp 10.
- FIG. 8 shows the clamp 10 in a closed and tensioned state.
- the brackets 20, 30 abut the pipe 12.
- the clamping screw 60 is tightened or screwed by rotation of the screw head 62 in a clockwise direction in the internal thread 26 on the flange 24 at the first end 21 of the first bracket 20.
- the second bracket 30 pivots about a pivot axis parallel to the central axis 18 of the clamp 10 on the hook means 42, 43, and the flange 34 at the first end 31 of the second bracket 30 is approximated to the flange 24 at the first end 21 of the first bracket 20.
- FIG. 9 shows a schematic representation of a section through the first bracket 20 near its second end 22 (see. FIGS. 1 to 8 ).
- the cutting plane of the FIG. 9 is perpendicular to the drawing planes of the FIGS. 5 to 8 and contains the central axis 18 of the pipe clamp 10th
- the cutting plane of the FIG. 9 cuts the recess 49 at the second end 22 of the first bracket 20 (see. FIGS. 1 to 8 ).
- the recess 49 is parallel to the cutting plane of the FIG. 9 essentially limited by the beads 50 and their flanks 52. Distances between the edges of the recess 49 on the one hand and the flanks 52 of the beads 50 on the other hand are smaller or no larger than in FIG. 9 detectable radii of curvature on the tongue 48.
- the beads 50 on the first bracket 20, in particular their inner edges 52 when closing the pipe clamp 10 and at the transition between the in FIG. 6 shown configuration and the in FIG. 7 shown leading or centering configuration. This simplifies the handling of the clamp 10 when closing.
- FIG. 10 shows a schematic representation of a portion of another pipe clamp 10, which in some features and properties of the above with reference to FIGS. 1 to 9 resembles shown clamp.
- the nature of the presentation in FIG. 10 corresponds to that of FIGS. 5 to 8
- FIG. 10 shows but unlike the FIGS. 5 to 8 no representation of the entire pipe clamp 10, but an enlarged view of a portion of the pipe clamp 10.
- the illustrated part of the pipe clamp 10 includes in particular the second ends 22, 32 of the bracket 20, 30th
- FIG. 10 The configuration shown is similar to that in FIG. 8 illustrated configuration. Only features and characteristics are described below, which are based on the above FIGS. 1 to 9 presented differently are. In FIG. 10 not shown and not described below characteristics and properties of the pipe clamp 10 are similar or correspond in particular to the above based on the FIGS. 1 to 9 shown.
- FIG. 10 illustrated clamp 10 differs from the above based on the FIGS. 1 to 9 represented in particular in that the tongue 48 is slightly longer and near its end 47 has a further curvature.
- the tongue 48 engages through the recess 49 at the second end 22 of the first bracket 20.
- the end 47 of the tongue 48 abuts against the inside of the first bracket 20.
- the end 47 of the tongue 48 is thus located between the first bracket 20 and an inserted into the pipe clamp 10 tube 12.
- the end 47 of the tongue 48 can thus be squeezed between the first bracket 20 and inserted into the pipe clamp 10 tube 12 and held non-positively be.
- profile element made of rubber or other elastic material contribute, the frictional force, in particular the static friction, between the end 47 of the tongue 48 and the tube 12 and / or between the end 47 of the tongue 48 and the first Temple 20 increased.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Clamps And Clips (AREA)
Description
Die vorliegende Erfindung ist auf eine Rohrschelle zum Umfassen und Halten eines Rohrs oder eines Schlauchs bezogen.The present invention relates to a pipe clamp for gripping and holding a pipe or hose.
Zur Befestigung von Rohren für Wasser, Gase oder andere Fluide werden in der Regel Rohrschellen verwendet. Eine Rohrschelle weist einen Schellenkörper auf, der dazu ausgebildet ist, ein Rohr im Wesentlichen kreisförmig zu umschließen und zu halten. Der Schellenkörper ist oft mit einem Gewinde verbunden, mittels dessen er unmittelbar oder mittelbar beispielsweise mit einer Wand oder einer Decke eines Bauwerks oder mit einem Profilträger verbunden werden kann. Der Schellenkörper weist beispielsweise eine mittels einer Spannschraube verschließbare Öffnung und ein gegenüberliegendes Gelenk auf. Ein Rohr kann durch die Öffnung in den Schellenkörper eingelegt werden. Durch Anziehen der Schraube wird der Schellenkörper an die Außenseite des Rohres gedrückt.For fixing pipes for water, gases or other fluids pipe clamps are usually used. A pipe clamp has a clamp body which is designed to enclose and hold a pipe in a substantially circular manner. The clamp body is often connected to a thread, by means of which it can be connected directly or indirectly, for example, with a wall or a ceiling of a building or with a profile support. The clamp body has, for example, a closable by means of a clamping screw opening and an opposite hinge. A tube can be inserted through the opening in the clamp body. By tightening the screw, the clamp body is pressed to the outside of the tube.
Rohrschellen sollen einerseits kostengünstig herstellbar und von Handwerkern im Idealfall ohne Einarbeitungszeit schnell und sicher montier- und handhabbar sein. Es existieren zahlreiche verschiedene Bauarten, die jeweils spezifische Vor- und Nachteile aufweisen.Pipe clamps on the one hand should be inexpensive to produce and be able to be installed and handled quickly and safely by craftsmen, ideally without any training time. There are numerous different types, each having specific advantages and disadvantages.
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Eine Aufgabe der vorliegenden Erfindung besteht darin, eine verbesserte Rohrschelle zu schaffen, insbesondere eine Rohrschelle, die einerseits möglichst kostengünstig herstellbar und andererseits möglichst einfach, schnell und sicher handhabbar und robust ist.An object of the present invention is to provide an improved pipe clamp, in particular a pipe clamp, on the one hand as inexpensive to produce and on the other hand as simple, fast and safe to handle and robust.
Diese Aufgabe wird durch die Gegenstände der unabhängigen Ansprüche gelöst.This object is solved by the subject matters of the independent claims.
Weiterbildungen sind in den abhängigen Ansprüchen angegeben.Further developments are specified in the dependent claims.
An einer Rohrschelle müssen in der Regel mehrere Funktionen verwirklicht sein. Die Rohrschelle muss an mindestens einer Stelle geöffnet und verschlossen werden können, um ein Rohr (oder einen Schlauch) in die Rohrschelle einlegen und aus der Rohrschelle entnehmen zu können. Wenn große mechanische Kräfte aufzunehmen sind, kommt ein biegeflexibler Schellenkörper regelmäßig nicht in Betracht. Im Falle eines starren, nicht biegeflexiblen Schellenkörpers müssen zwei oder mehr den Schellenkörper bildende, jeweils starre Bügel gelenkig verbunden sein. Zum Herstellen einer kraftschlüssigen Verbindung zwischen Rohrschelle und Rohr und/oder zum Anpassen der Rohrschelle an Rohre unterschiedlicher Durchmesser oder Querschnitte ist ferner eine Spanneinrichtung vorzusehen.On a pipe clamp several functions must be realized in the rule. The pipe clamp must be able to be opened and closed in at least one place in order to insert a pipe (or hose) into the pipe clamp and remove it from the pipe clamp. When large mechanical forces are to be absorbed, a flexible clamp body is usually out of the question. In the case of a rigid, non-bendable clamp body two or more forming the clamp body, each rigid bracket must be hinged. For producing a non-positive connection between the pipe clamp and the pipe and / or for adapting the pipe clamp to pipes of different diameters or cross sections, a tensioning device is furthermore to be provided.
Die drei genannten Funktionen - Verschluss, Gelenk und Spanneinrichtung - sind herkömmlich auf die beiden Verbindungspunkte zwischen den den Schellenkörper bildenden Bügeln verteilt. Gelenk und Verschluss sind dabei regelmäßig einander gegenüberliegend angeordnet. Bei den in den oben genannten
Auch bei der in der
Ausführungsformen der vorliegenden Erfindung beruhen auf der Idee, die drei genannten Funktionen - Verschluss, Gelenk und Spanneinrichtung - anders als beim Stand der Technik auf die Enden zweier Bügel einer Rohrschelle zu verteilen. Erste Enden der beiden Bügel sind durch eine Spanneinrichtung, insbesondere eine Spannschraube miteinander verbunden, die gleichzeitig als Gelenk fungiert. Die zweiten Enden der Bügel sind durch Hakeneinrichtungen miteinander verbindbar, die insbesondere lediglich die Funktion eines Verschlusses aufweisen und nicht zum Spannen der Rohrschelle vorgesehen sind. Die Hakeneinrichtungen können deshalb wesentlich einfacher bzw. konstruktiv deutlich weniger aufwendig ausgebildet sein, als beispielsweise die Rasteinrichtung gemäß der erwähnten
Eine Rohrschelle umfasst einen Schellenkörper mit einem ersten Bügel und einem zweiten Bügel, zum Umfassen und Halten eines Rohrs oder eines Schlauchs bilden, eine Spanneinrichtung zum Verbinden und Zusammenziehen eines ersten Endes des ersten Bügels und eines ersten Endes des zweiten Bügels, eine erste Hakeneinrichtung, die einstückig mit dem zweiten Ende des ersten Bügels ausgebildet ist, und eine korrespondierende zweite Hakeneinrichtung, die einstückig mit dem zweiten Ende des zweiten Bügels ausgebildet ist, zum formschlüssigen Verbinden der zweiten Enden der Bügel.A clamp includes a clamp body having a first bracket and a second bracket for engaging and holding a pipe or hose, tensioning means for connecting and contracting a first end of the first bracket and a first end of the second bracket, a first hook means is formed integrally with the second end of the first bracket, and a corresponding second hook means, which is integrally formed with the second end of the second bracket, for positively connecting the second ends of the bracket.
Jeder Bügel ist insbesondere ausgebildet, um das Rohr oder den Schlauch jeweils im Wesentlichen zur Hälfte zu umfassen, um ein Einlegen des Rohrs oder des Schlauchs in die Rohrschelle und ein Entnehmen daraus zu ermöglichen. Der erste Bügel und der zweite Bügel sind insbesondere jeweils im Wesentlichen halbkreisbogenförmig. Insbesondere wenn die Rohrschelle für ein Rohr oder einen Schlauch mit einem nicht-kreisförmigen Querschnitt vorgesehen und ausgebildet ist, können die beiden Bügel jeweils nichtkreisbogenförmig ausgebildet und an die Kontur des Querschnitts des zu umfassenden und zu haltenden Rohrs oder Schlauchs angepasst sein.Each stirrup is in particular designed to substantially completely enclose the tube or tube in each case in order to allow the tube or tube to be inserted into the clamp and removed therefrom. In particular, the first bracket and the second bracket are each substantially semicircular in shape. In particular, when the pipe clamp is provided and designed for a pipe or a hose having a non-circular cross section, the two brackets may each be non-circular arc-shaped and adapted to the contour of the cross section of the pipe or hose to be encompassed and held.
Die Spanneinrichtung umfasst insbesondere eine Spannschraube, die beispielsweise durch ein Loch bzw. eine Durchgangsöffnung an einem der beiden Bügel hindurchgreift und in ein Innengewinde am anderen der beiden Bügel eingreift. Das Loch oder die Durchgangsöffnung ist insbesondere so ausgebildet, dass ein mechanisches Spiel der Spannschraube in dem Loch bzw. der Durchgangsöffnung ein Bewegen des zugeordneten Bügels relativ zu der Spannschraube ermöglicht. Dadurch weist die Verbindung zwischen der Spannschraube und dem Bügel, durch den die Spannschraube hindurchgreift, gleichzeitig die Funktion eines Gelenks zwischen den beiden Bügeln auf.In particular, the tensioning device comprises a tensioning screw which, for example, engages through a hole or through opening on one of the two brackets and engages in an internal thread on the other of the two brackets. The hole or the passage opening is in particular formed so that a mechanical clearance of the clamping screw in the hole or the passage opening enables a movement of the associated bracket relative to the clamping screw. Thereby, the connection between the clamping screw and the bracket through which the clamping screw engages, at the same time on the function of a joint between the two brackets.
Da die Hakeneinrichtungen nicht gleichzeitig die Funktion einer Spanneinrichtung aufweisen müssen, können sie konstruktiv besonders einfach ausgebildet sein. Dies kann hinsichtlich des Aufwands und der Kosten der Herstellung als auch hinsichtlich der mechanischen Robustheit der Rohrschelle vorteilhaft sein. Die Hakeneinrichtungen können so ausgebildet sein, dass die zweite Hakeneinrichtung einfach, schnell und sicher in die erste Hakeneinrichtung eingehakt werden kann, insbesondere mit nur einer Hand.
Bei einer Rohrschelle, wie sie hier beschrieben ist, sind insbesondere die erste Hakeneinrichtung starr am ersten Bügel und die zweite Hakeneinrichtung starr am zweiten Bügel angeordnet.
Insbesondere ist also weder zwischen der ersten Hakeneinrichtungen und anderen Bereichen des ersten Bügels noch zwischen der zweiten Hakeneinrichtung und anderen Bereichen des zweiten Bügels ein Festkörpergelenk oder ein anderer im Wesentlichen elastischer Abschnitt vorgesehen. Die erwähnte Einstückigkeit hat zur Folge, dass auch kein anderes Gelenk vorgesehen ist.
Starr im Sinne der vorliegenden Beschreibung ist eine mechanische Verbindung oder eine mechanische Struktur trotz der jedem Material und deshalb auch jedem realen Bauteil innewohnenden Elastizität, wenn die elastische (oder auch plastische) Verformbarkeit konstruktiv nicht im Vordergrund steht, insbesondere kein erwünschte oder für die Funktion erforderliche oder vorteilhafte Eigenschaft darstellt. Nicht ausgeschlossen sein sollen ferner eine Elastizität des ersten Bügels und eine Elastizität des zweiten Bügels jeweils als Ganzes.
Eine starre Anordnung der ersten Hakeneinrichtung am ersten Bügel und eine starre Anordnung der zweiten Hakeneinrichtung am zweiten Bügel können eine konstruktiv besonders einfache und mechanisch besonders robuste Ausgestaltung der Rohrschelle ermöglichen.
Bei einer Rohrschelle, wie sie hier beschrieben ist, ist die erste Hakeneinrichtung durch einen umgebogenen Randabschnitt am zweiten Ende des ersten Bügels gebildet.
Bei einer Rohrschelle, wie sie hier beschrieben ist, ist die zweite Hakeneinrichtung durch einen umgebogenen Randabschnitt am zweiten Ende des zweiten Bügels gebildet.Since the hook means do not have to have the function of a clamping device at the same time, they can be structurally particularly simple be. This may be advantageous in terms of the cost and cost of manufacture as well as the mechanical robustness of the clamp. The hook devices can be designed so that the second hook device can be easily, quickly and safely hooked into the first hook device, in particular with only one hand.
In the case of a pipe clamp, as described here, in particular the first hook device is rigidly arranged on the first bracket and the second hook device is rigidly mounted on the second bracket.
In particular, neither between the first hook means and other areas of the first bracket nor between the second hook means and other areas of the second bracket, a solid-state joint or other substantially elastic portion is provided. The aforementioned one-piece has the consequence that no other joint is provided.
Rigid in the sense of the present description is a mechanical connection or a mechanical structure despite the inherent elasticity of each material and therefore also each real component, if the elastic (or plastic) deformability is structurally not in the foreground, in particular no desired or required for the function or advantageous property. Also not to be excluded an elasticity of the first bracket and an elasticity of the second bracket in each case as a whole.
A rigid arrangement of the first hook device on the first bracket and a rigid arrangement of the second hook device on the second bracket can allow a structurally particularly simple and mechanically particularly robust embodiment of the pipe clamp.
In a pipe clamp, as described here, the first hook device is formed by a bent edge portion at the second end of the first bracket.
In a pipe clamp, as described here, the second hook device is formed by a bent edge portion at the second end of the second bracket.
Die Randabschnitte sind insbesondere jeweils um mehr als 90 Grad, beispielsweise um einen Winkel im Bereich von 120 Grad bis 180 Grad oder im Bereich von 150 Grad bis 180 Grad, umgebogen, um eine formschlüssige Verbindung der zweiten Enden der Bügel nicht nur im Sinne eines labilen, sondern im Sinne eines stabilen mechanisch-geometrischen Gleichgewichts zu ermöglichen. Die Randabschnitte können jeweils rund (insbesondere kreisbogenförmig) oder eckig umgebogen sein. Im Sinne der mechanischen Festigkeit des umgebogenen Randabschnitts kann eine möglichst konstante Krümmung ohne ausgeprägte lokale Krümmungsmaxima vorteilhaft sein.In particular, the edge portions are each bent by more than 90 degrees, for example by an angle in the range of 120 degrees to 180 degrees or in the range of 150 degrees to 180 degrees, to a positive connection of the second ends of the bracket not only in the sense of an unstable , but in the sense of a stable mechanical-geometric balance to allow. The edge sections can each be bent round (in particular circular arc-shaped) or angularly. In terms of the mechanical strength of the bent-over edge section, a curvature that is as constant as possible without pronounced local curvature maxima may be advantageous.
Die Randabschnitte sind insbesondere jeweils so umgebogen, dass im umgebogenen Bereich alle Krümmungsradien senkrecht oder im Wesentlichen senkrecht zur Mittelachse der Rohrschelle bzw. zur Symmetrieachse eines in die Rohrschelle eingelegten Rohrs oder Schlauchs sind. Insbesondere sind der Randabschnitt am zweiten Ende des zweiten Bügels nach innen (zu einem in die Rohrschelle eingelegten Rohr hin) und der Randabschnitt am zweiten Ende des ersten Bügels nach außen umgebogen oder umgekehrt.In particular, the edge sections are respectively bent such that in the bent region all radii of curvature are perpendicular or substantially perpendicular to the central axis of the pipe clamp or to the axis of symmetry of a pipe or hose inserted in the pipe clamp. In particular, the edge portion at the second end of the second bracket inwardly (to a tube inserted into the pipe clamp back) and the edge portion at the second end of the first bracket are bent outwardly or vice versa.
Gerade im Vergleich zu den in den oben genannten Druckschriften offenbarten Rohrschellen, wird deutlich, dass die Ausbildung von Hakeneinrichtungen aus umgebogenen Randabschnitten eine konstruktive und hinsichtlich der Fertigung besonders einfache und kostengünstige Alternative darstellt.Especially in comparison to the disclosed in the above-mentioned pamphlets, it is clear that the formation of hook means of bent edge portions is a constructive and in terms of manufacturing particularly simple and cost-effective alternative.
Bei einer Rohrschelle, wie sie hier beschrieben ist, sind das zweite Ende des ersten Bügels und das zweite Ende des zweiten Bügels insbesondere ausgebildet, um bei der vorgesehenen formschlüssigen Verbindung der Hakeneinrichtungen eine Bewegung der zweiten Enden der Bügel relativ zueinander in Richtung parallel zur Mittelachse der Rohrschelle formschlüssig zu unterbinden.In a pipe clamp, as described here, the second end of the first bracket and the second end of the second bracket are in particular designed to move in the intended positive connection of the hook means a movement of the second ends of the bracket relative to each other in the direction parallel to the central axis Prevent clamps with positive locking.
Die Mittelachse der Rohrschelle ist insbesondere die Symmetrieachse eines in die Rohrschelle eingelegten kreiszylindermantelförmigen Rohrs. Wenn die Rohrschelle gespannt ist, kann zwischen den Hakeneinrichtungen auch für Relativkräfte parallel zur Mittelachse eine kraftschlüssige Verbindung bestehen. Insbesondere vor dem Spannen der Rohrschelle kann eine formschlüssige Unterbindung einer Relativbewegung parallel zur Mittelachse die Handhabung deutlich vereinfachen.The central axis of the pipe clamp is in particular the axis of symmetry of an inserted into the pipe clamp circular cylinder jacket-shaped tube. If the pipe clamp is stretched, can exist between the hook means for relative forces parallel to the central axis a frictional connection. In particular, before the clamping of the clamp, a positive closure of a relative movement parallel to the central axis can significantly simplify handling.
Eine Rohrschelle, wie sie hier beschrieben ist, umfasst ferner einen vorstehenden Bereich am zweiten Ende des zweiten Bügels, der ausgebildet ist, um in eine Ausnehmung am zweiten Ende des ersten Bügels einzugreifen.A pipe clip as described herein further includes a protruding portion at the second end of the second bracket adapted to engage a recess at the second end of the first bracket.
Zusätzlich kann die Rohrschelle einen vorstehenden Bereich am zweiten Ende des ersten Bügels umfassen, der ausgebildet ist, um in eine Ausnehmung am zweiten Ende des zweiten Bügels einzugreifen.In addition, the clamp may include a protruding portion at the second end of the first bracket adapted to engage a recess at the second end of the second bracket.
Der vorstehende Bereich ist insbesondere nasenförmig oder zungenförmig ausgebildet. Der vorstehende Bereich ist insbesondere gekrümmt, und zwar insbesondere so, dass im Wesentlichen alle Krümmungsradien am vorstehenden Bereich senkrecht oder im Wesentlichen senkrecht zur Mittelachse der Rohrschelle bzw. zur Symmetrieachse eines in die Rohrschelle eingelegten Rohrs oder Schlauchs sind. Der vorstehende Bereich ist insbesondere L-und/oder hakenförmig oder im Wesentlichen L- und/oder hakenförmig, um in die Ausnehmung einzugreifen.The projecting area is in particular nose-shaped or tongue-shaped. The projecting area is in particular curved, in particular in such a way that substantially all the radii of curvature at the projecting area are perpendicular or substantially perpendicular to the central axis of the pipe clamp or to the axis of symmetry of a pipe or hose inserted into the pipe clamp. The projecting area is in particular L-shaped and / or hook-shaped or substantially L-shaped and / or hook-shaped in order to engage in the recess.
Die Ausnehmung ist in Gestalt einer fensterförmigen Öffnung bzw. eines Durchgangslochs ausgebildet. Der vorstehende Bereich und die Ausnehmung können ferner ausgebildet sein, um einen Teil der Zugkraft zwischen den Bügeln aufzunehmen.The recess is formed in the shape of a window-shaped opening or a through-hole. The projecting portion and the recess may be further formed to receive a part of the tensile force between the brackets.
Der in die Ausnehmung eingreifende vorstehende Bereich kann als Einrasthilfe oder Einhänghilfe für das Verbinden der beiden Hakeneinrichtungen an den zweiten Enden der Bügel vorgesehen und ausgebildet sein. Insbesondere kann das Eingreifen des vorstehenden Bereichs in die Ausnehmung eine korrekte relative Ausrichtung der zweiten Enden der Bügel und damit direkt oder indirekt auch eine korrekte formschlüssige Verbindung der Hakeneinrichtungen an den zweiten Enden der Bügel bewirken. Ferner kann das Eingreifen des vorstehenden Bereichs in die Ausnehmung eine Relativbewegung der zweiten Enden der Bügel in Richtung parallel zur Mittelachse der Rohrschelle unterbinden oder erschweren. Ferner kann das Eingreifen des vorstehenden Bereichs in die Ausnehmung eine korrekte relative Ausrichtung der zweiten Enden der Bügel und/oder eine korrekte formschlüssige Verbindung der Hakeneinrichtungen an den zweiten Enden der Bügel anzeigen.The protruding portion engaging in the recess may be provided and formed as a latching aid or a suspension aid for connecting the two hook means to the second ends of the stirrups. In particular, the engagement of the projecting portion in the recess may cause a correct relative alignment of the second ends of the stirrups and thus directly or indirectly also a correct positive connection of the hook means to the second ends of the stirrups. Further, the engagement of the projecting portion into the recess may prevent or hamper relative movement of the second ends of the stirrups in the direction parallel to the central axis of the pipe clip. Further, engagement of the protruding portion into the recess may indicate correct relative alignment of the second ends of the stirrups and / or correct positive engagement of the hook means at the second ends of the stirrups.
Bei einer Rohrschelle, wie sie hier beschrieben ist, ist insbesondere der vorstehende Bereich zungenförmig ausgebildet und vorgesehen, um in einen Zwischenraum zwischen dem ersten Bügel und einem in die Rohrschelle eingelegten Rohr einzugreifen.In a pipe clamp, as described here, in particular, the projecting portion is tongue-shaped and provided to be in a Intervening space between the first bracket and a tube inserted into the pipe clamp.
Der zungenförmige Bereich ist insbesondere als streifenförmige und gekrümmte Zunge am zweiten Ende des zweiten Bügels ausgebildet. Der zungenförmig ausgebildete Bereich ist insbesondere abgewinkelt. Der zungenförmig ausgebildete Bereich ist beispielsweise im Wesentlichen L-förmig oder im Wesentlichen hakenförmig abgewinkelt, so dass der zungenförmige Bereich durch die Ausnehmung hindurchgreifen und das Ende des zungenförmigen Bereichs parallel oder im Wesentlichen parallel am ersten Bügel der Rohrschelle anliegen können. Der zungenförmige Bereich kann zwischen dem ersten Bügel und einem in die Rohrschelle eingelegten Rohr eingequetscht und dabei kraftschlüssig in seiner vorgesehenen Position gehalten werden. Dies kann ein unbeabsichtigtes Öffnen oder Aufspringen der Rohschelle unterbinden oder erschweren.The tongue-shaped area is formed in particular as a strip-shaped and curved tongue at the second end of the second bracket. The tongue-shaped area is in particular angled. The tongue-shaped area is, for example, substantially L-shaped or substantially angled in an angled manner, so that the tongue-shaped area can reach through the recess and the end of the tongue-shaped area can rest parallel or substantially parallel on the first bracket of the pipe clamp. The tongue-shaped area can be squeezed between the first bracket and a tube inserted into the pipe clamp and thereby positively held in its intended position. This can prevent or hinder unintentional opening or popping of the pipe clamp.
Bei einer Rohrschelle, wie sie hier beschrieben ist, ist die Ausnehmung insbesondere in axialer Richtung von zwei zur Außenseite der Rohrschelle vorstehenden Sicken begrenzt.In a pipe clamp, as described here, the recess is delimited, in particular in the axial direction, by two beads projecting towards the outside of the pipe clamp.
Die Außenseite der Rohrschelle ist die von einem in die Rohrschelle eingelegten Rohr abgewandte bzw. nach radial außen orientierte Seite der Rohrschelle, insbesondere von deren Bügeln. Axiale Richtungen sind die beiden zur bereits erwähnten Mittelachse der Rohrschelle parallelen Richtungen. Die Sicken begrenzen die Ausnehmung in axialer Richtung, indem sie unmittelbar an Ränder der Ausnehmung angrenzen oder lediglich einen kleinen Abstand zu diesen aufweisen. Ein Abstand ist klein, wenn er nicht größer ist als Krümmungsradien an Flächen am vorstehenden Bereich, die die Ränder der Ausnehmung und die Sicken berühren können. Insbesondere bilden Flanken der Sicken gleichzeitig Ränder der Ausnehmung.The outside of the pipe clamp is the side facing away from a pipe inserted into the pipe clamp or radially outwardly oriented side of the clamp, in particular of their ironing. Axial directions are the two parallel to the already mentioned center axis of the pipe clamp directions. The beads limit the recess in the axial direction, by being directly adjacent to edges of the recess or only have a small distance to this. A distance is small if it is not greater than radii of curvature at surfaces on the projecting portion, which can touch the edges of the recess and the beads. In particular, flanks of the beads simultaneously form edges of the recess.
Die beschriebene Ausgestaltung der Ausnehmung und der Sicken kann eine Führungswirkung der Sicken beim Einführen des vorstehenden Bereichs in die Ausnehmung ermöglichen. Diese Führungswirkung kann die Handhabung der Rohrschelle insbesondere beim Schließen vereinfachen.The described configuration of the recess and the beads may allow a guiding action of the beads during insertion of the projecting portion into the recess. This guiding effect can simplify the handling of the pipe clamp, especially when closing.
Bei einer Rohrschelle, wie sie hier beschrieben ist, verbindet insbesondere die Spanneinrichtung das erste Ende des ersten Bügels mit dem ersten Ende des zweiten Bügels gelenkig.In a pipe clamp, as described here, in particular, the clamping device connects the first end of the first bracket with the first end of the second bracket articulated.
Bei einer Rohrschelle, wie sie hier beschrieben ist, umfasst die Spanneinrichtung insbesondere eine Schraube, die durch ein Langloch am ersten Ende des zweiten Bügels hindurchgreift und in ein Gewinde am ersten Ende des ersten Bügels eingreift.In a pipe clamp, as described here, the clamping device comprises in particular a screw which engages through a slot at the first end of the second bracket and engages in a thread at the first end of the first bracket.
Das Langloch ist insbesondere in einem Flansch am ersten Ende des zweiten Bügels angeordnet. Das Gewinde ist insbesondere in einem Flansch am ersten Ende des ersten Bügels angeordnet. Flansche sind jeweils insbesondere so ausgebildet, dass sie jeweils im Wesentlichen senkrecht bzw. in radialer Richtung vom zugeordneten Bügel abstehen. Das Langloch ist insbesondere so ausgebildet, dass es ein Schwenken des zweiten Bügels relativ zum ersten Bügel um eine Achse parallel zur Mittelachse der Rohrschelle um einen Winkel von mindestens 45 Grad, insbesondere ca. 60 Grad, erlaubt.The slot is arranged in particular in a flange at the first end of the second bracket. The thread is arranged in particular in a flange at the first end of the first bracket. Flanges are each in particular designed so that they each protrude substantially perpendicular or in the radial direction of the associated bracket. The slot is in particular designed so that it allows pivoting of the second bracket relative to the first bracket about an axis parallel to the central axis of the pipe clamp by an angle of at least 45 degrees, in particular about 60 degrees.
Im Fall einer vernachlässigbaren Dicke bzw. Materialstärke des Flanschs beträgt die Länge I des Langlochs zur Erzielung eines Schwenkwinkels α bei einem Durchmesser d der Schraube I = d/cos(α). Die Länge I des Langlochs muss somit mindestens das ca. 1,4-fache des Durchmessers d des Gewindes der Schraube aufweisen, um einen Schwenkwinkel von 45 Grad zu ermöglichen.In the case of a negligible thickness or material thickness of the flange, the length I of the oblong hole for achieving a swivel angle α at a diameter d of the screw is I = d / cos (α). The length I of the slot must thus have at least about 1.4 times the diameter d of the thread of the screw to allow a pivoting angle of 45 degrees.
Bei einer Rohrschelle, wie sie hier beschrieben ist, ist insbesondere am ersten Ende des zweiten Bügels eine Vertiefung zur zumindest teilweisen Aufnahme des Kopfes der Schraube vorgesehen.In a pipe clamp, as described here, a recess for at least partially receiving the head of the screw is provided in particular at the first end of the second bracket.
Die Vertiefung ist insbesondere durch Tiefziehen oder Prägen und insbesondere am erwähnten Flansch am ersten Ende des zweiten Bügels erzeugt. Die Vertiefung ist insbesondere im Wesentlichen kreisförmig und weist einen Durchmesser auf, der nicht oder nicht wesentlich größer als der Durchmesser des Kopfes der Schraube ist. Wenn die Vertiefung den Kopf der Schraube mit wenig oder ohne Spiel aufnimmt, kann dies eine formschlüssige Arretierung des zweiten Bügels relativ zur Schraube bewirken, die eine Bewegung des zweiten Bügels parallel zum Langloch unterbindet oder beschränkt. Dadurch kann - bei hinreichend steif ausgestalteten Bügeln - eine formschlüssige Verbindung der Hakeneinrichtungen an den zweiten Enden der Bügel verriegelt werden.The recess is produced in particular by deep drawing or embossing and in particular on the aforementioned flange at the first end of the second bracket. The recess is in particular substantially circular and has a diameter which is not or not substantially greater than the diameter of the head of the screw. If the recess receives the head of the screw with little or no play, this may cause a positive locking of the second bracket relative to the screw, which prevents or limits a movement of the second bracket parallel to the slot. This can - with sufficiently stiff designed ironing - a positive connection of the hook means are locked to the second ends of the bracket.
Insbesondere wenn die Rohrschelle ein Langloch umfasst, durch das die Schraube hindurchgreift, kann eine Vertiefung zur zumindest teilweisen Aufnahme des Kopfes der Schraube die Vormontage vereinfachen. Ohne eine Vertiefung sind zumindest die ersten Enden der Bügel relativ zueinander in Richtung parallel zu dem Langloch bewegbar. Durch die zumindest teilweise Aufnahme des Kopfes in der Vertiefung kann diese Relativbewegung der ersten Enden der Bügel und damit auch der gesamten Bügel formschlüssig teilweise oder vollständig unterbunden werden. Dadurch wiederum kann ein unbeabsichtigtes Lösen der Verbindung der Hakeneinrichtungen an den zweiten Enden der Bügel, das heißt ein unbeabsichtigtes Aufspringen der Rohrschelle, verhindert oder zumindest deutlich unwahrscheinlicher gemacht werden. Die Vertiefung kann somit eine deutliche Vereinfachung der Vormontage ermöglichen.In particular, when the pipe clamp comprises a slot through which the screw engages, a recess for at least partially receiving of the head of the screw simplify pre-assembly. Without a recess, at least the first ends of the stirrups are movable relative to one another in the direction parallel to the oblong hole. Due to the at least partially receiving the head in the depression, this relative movement of the first ends of the bracket and thus also the entire bracket can be positively or partially prevented completely. In turn, this can prevent inadvertent release of the connection of the hook means at the second ends of the bracket, that is an unintentional cracking of the clamp, or at least made much less likely. The recess can thus allow a significant simplification of the pre-assembly.
Im Ergebnis wurde mit Rohrschellen mit den hier beschriebenen Merkmalen bei der Montage eine Zeitersparnis von bis zu 70 Prozent gegenüber herkömmlichen Rohrschellen für vergleichbare Anwendungen erzielt.As a result, pipe clamps with the features described here achieved a time saving of up to 70 percent compared to conventional pipe clamps for comparable applications.
Bei einer Rohrschelle, wie sie hier beschrieben ist, bilden die erste Hakeneinrichtung und die zweite Hakeneinrichtung insbesondere keine Rastverbindung.In the case of a pipe clamp, as described here, the first hook device and the second hook device in particular do not form a latching connection.
Dies kann eine konstruktiv und fertigungstechnisch einfachere und mechanisch robustere Ausgestaltung ermöglichen. Dadurch unterscheidet sich die Rohrschelle insbesondere von der in der erwähnten
Nachfolgend werden Ausführungsbeispiele anhand der beigefügten Figuren näher erläutert. Es zeigen:
- Figur 1
- eine schematische axonometrische Darstellung einer Rohrschelle;
- Figur 2
- eine weitere schematische axonometrische Darstellung der Rohrschelle aus
Figur 1 ; - Figur 3
- eine weitere schematische axonometrische Darstellung der Rohrschelle aus den
Figuren 1 und 2 ; - Figur 4
- eine weitere schematische axonometrische Darstellung eines Teils der Rohrschelle aus den
Figuren 1 bis 3 ; - Figur 5
- eine weitere schematische Darstellung der Rohrschelle aus den Figuren 1 bis 4;
- Figur 6
- eine weitere schematische Darstellung der Rohrschelle aus den Figuren 1 bis 5;
- Figur 7
- eine weitere schematische Darstellung der Rohrschelle aus den Figuren 1 bis 6;
- Figur 8
- eine weitere schematische Darstellung der Rohrschelle aus den Figuren 1 bis 7;
- Figur 9
- eine schematische Darstellung eines Schnitts durch die Rohrschelle aus den
Figuren 1 bis 8 ; Figur 10- eine schematische Darstellung eines Teils einer weiteren Rohrschelle.
- FIG. 1
- a schematic axonometric representation of a pipe clamp;
- FIG. 2
- another schematic axonometric representation of the clamp from
FIG. 1 ; - FIG. 3
- a further schematic axonometric representation of the clamp from the
Figures 1 and 2 ; - FIG. 4
- a further schematic axonometric representation of a part of the pipe clamp from the
FIGS. 1 to 3 ; - FIG. 5
- a further schematic representation of the pipe clamp of Figures 1 to 4;
- FIG. 6
- a further schematic representation of the pipe clamp of Figures 1 to 5;
- FIG. 7
- a further schematic representation of the pipe clamp of Figures 1 to 6;
- FIG. 8
- a further schematic representation of the pipe clamp of Figures 1 to 7;
- FIG. 9
- a schematic representation of a section through the pipe clamp from the
FIGS. 1 to 8 ; - FIG. 10
- a schematic representation of a portion of another pipe clamp.
Der erste Bügel 20 und der zweite Bügel 30 weisen jeweils mehrere Schlitze 14 zur Aufnahme oder Befestigung von elastischen Elementen auf, die in Figur 1 nicht dargestellt sind. Diese elastischen Elemente können mehrere Funktionen aufweisen, insbesondere die akustische Entkopplung der Rohrschelle 10 von einem durch die Rohrschelle 10 gehaltenen Rohr oder Schlauch, die Erhöhung der Reibung zwischen Rohrschelle 10 und einem von der Rohrschelle 10 gehaltenen Rohr oder Schlauch und/oder den Ausgleich geometrischer Unterschiede korrespondierender Flächen an der Innenseite der Rohrschelle 10 und an der Außenseite eines von der Rohrschelle 10 gehaltenen Rohrs oder Schlauchs.The
Als Mittelachse 18 der Rohrschelle 10 wird die Achse eines in der vorgesehenen Weise in die Rohrschelle 10 eingelegten kreiszylindrischen Rohres bezeichnet.As the
Der erste Bügel 20 weist ein erstes Ende 21 und ein zweites Ende 22 auf. Am ersten Ende 21 des ersten Bügels 20 ist ein Flansch 24 mit einem Innengewinde 26 vorgesehen. Am zweiten Ende 22 des ersten Bügels 20 sind eine Hakeneinrichtung und eine Ausnehmung vorgesehen, die unten mit Bezug auf die
Der zweite Bügel 30 weist ein erstes Ende 31 und ein zweites Ende 32 auf. Am ersten Ende 31 des zweiten Bügels 30 ist ein Flansch 34 vorgesehen. Im Flansch 34 am ersten Ende 31 des zweiten Bügels 30 ist ein Langloch vorgesehen, das in
An beiden Bügeln 20, 30 sind Sicken 50 vorgesehen, die die Bügel 20, 30 materialsparend versteifen. Die Sicken 50 sind nach außen gerichtet bzw. von einem in der Rohrschelle 10 aufgenommenen Rohr oder Schlauch weg orientiert. Die Sicken 50 können weitere Funktionen und Aufgaben haben, beispielsweise eine formschlüssige Verbindung mit dem oder den erwähnten elastischen Elementen.On both
Das Langloch 36 erstreckt sich senkrecht zur Mittelachse 18 der Rohrschelle 10. Die Länge des Langlochs 36 ist bei dem dargestellten Beispiel größer als der Durchmesser der im Wesentlichen kreisförmigen Vertiefung 38. Die Vertiefung befindet sich bei dem dargestellten Beispiel im Wesentlichen in der Mitte des Langlochs 36. Bei der für den geschlossenen und gespannten Zustand der Rohrschelle 10 vorgesehenen und in den
Am zweiten Ende 22 des ersten Bügels 20 ist eine Ausnehmung 49 in Gestalt eines rechteckigen Fensters vorgesehen. Weitere Merkmale und Eigenschaften der Bügel 20, 30 an deren zweiten Enden 22, 32 sind unten mit Bezug auf
Der erste Bügel 20 weist am zweiten Ende 22 eine erste Hakeneinrichtung 42 in Gestalt zweier umgebogener Randabschnitte 23 auf. Der zweite Bügel 30 weist am zweiten Ende 32 eine zweite Hakeneinrichtung 43 in Gestalt zweier umgebogener Randabschnitte 33 auf. Die Randabschnitte 23, 33 sind jeweils um einen Winkel zwischen 150 Grad und 170 Grad umgebogen. Die umgebogenen Randabschnitte 23, 33 weisen jeweils eine im Wesentlichen konstante Krümmung auf, wobei alle Krümmungsvektoren senkrecht zur Mittelachse 18 der Rohrschelle 10 (vgl.
Die umgebogenen Randabschnitte 23 am zweiten Ende 22 sind ebenso wie Sicken 50 symmetrisch am ersten Bügel 20 angeordnet. Die umgebogenen Randabschnitte 33 am zweiten Ende 32 des zweiten Bügels 30 sind ebenso wie Sicken 50 symmetrisch am zweiten Bügel 30 angeordnet. Je ein umgebogener Randabschnitt 23 am zweiten Ende 22 des ersten Bügels 20 und ein umgebogener Randabschnitt 33 am zweiten Ende 32 des zweiten Bügels 30 sind korrespondierend ausgebildet und angeordnet.The bent edge portions 23 at the
Zwischen den umgebogenen Randabschnitten 33 am zweiten Ende 32 des zweiten Bügels 30 ist eine Zunge 48 vorgesehen, die mit dem zweiten Bügel 30 einstückig ausgebildet ist. Die Zunge 48 ist abgewinkelt und weist einen Querschnitt auf, der zu der fensterförmigen Ausnehmung 49 am zweiten Ende 22 des ersten Bügels 20 korrespondiert.Between the bent edge portions 33 at the
In den
Bei der in den
Ferner können die Zunge 48 und die Ausnehmung 49 so ausgebildet sein, dass durch Formschluss der Zunge 48 mit der Ausnehmung 49 ein Teil einer Zugkraft zwischen den Bügeln 20, 30 aufgenommen werden kann. Wie unten anhand der
Im Unterschied zu den Darstellungen in den
Das Langloch 36 ist so lang, dass der zweite Bügel 30 relativ zum ersten Bügel 20 in einem großen Winkelbereich um eine Schwenkachse parallel zur Mittelachse 18 geschwenkt werden kann. In
Beim Ãœbergang von der in
Bei der in
Die Schnittebene der
Die in
Die in
Das beschriebene kraftschlüssige Halten des Endes 47 der Zunge 48 zwischen dem ersten Bügel 20 und einem in die Rohrschelle 10 eingelegten Rohr 12 kann dazu beitragen, dass ein Öffnen der Rohrschelle 10 unterbunden ist.The described frictional retention of the
- 1010
- Rohrschellepipe clamp
- 1212
- Rohrpipe
- 1414
- Schlitz zur Aufnahme von elastischem ElementSlot for receiving elastic element
- 1616
-
Befestigungsmutter an Rohrschelle 10Fixing nut on
pipe clamp 10 - 1818
-
Mittelachse der Rohrschelle 10Center axis of the
pipe clamp 10 - 2020
- erster Bügelfirst temple
- 2121
-
erstes Ende des ersten Bügels 20first end of the
first bracket 20 - 2222
-
zweites Ende des ersten Bügels 20second end of the
first bracket 20 - 2323
-
Randabschnitt am zweiten Ende 22 des ersten Bügels 20Edge portion at the
second end 22 of the first bracket 20th - 2424
-
Flansch am ersten Ende 21 des ersten Bügels 20Flange at the
first end 21 of the first bracket 20th - 2626
-
Innengewinde am Flansch 24 am ersten Ende 21 des ersten Bügels 20Internal thread on the
flange 24 at thefirst end 21 of the first bracket 20th - 3030
- zweiter Bügelsecond bracket
- 3131
-
erstes Ende des zweiten Bügels 30first end of the
second bracket 30 - 3232
-
zweites Ende des zweiten Bügels 30second end of the
second bracket 30 - 3333
-
Randabschnitt am zweiten Ende 32 des zweiten Bügels 30Edge portion at the
second end 32 of the second bracket 30th - 3434
-
Flansch am ersten Ende 31 des zweiten Bügels 30Flange at the
first end 31 of the second bracket 30th - 3636
-
Langloch am Flansch 34 am ersten Ende 31 des zweiten Bügels 30Slot on the
flange 34 at thefirst end 31 of the second bracket 30th - 3838
-
Vertiefung im Flansch 34 am ersten Ende 31 des zweiten Bügels 30Recess in the
flange 34 at thefirst end 31 of the second bracket 30th - 4242
- Hakeneinrichtung am ersten Bügel 20Hook device on the first bracket 20th
- 4343
- Hakeneinrichtung am zweiten Bügel 30Hook device on the second bracket 30th
- 4747
-
Ende der Zunge 48 am zweiten Ende 32 des zweiten Bügels 30End of the
tongue 48 at thesecond end 32 of the second bracket 30th - 4848
-
Zunge am zweiten Ende 32 des zweiten Bügels 30Tongue at the
second end 32 of the second bracket 30th - 4949
-
Ausnehmung am zweiten Ende 22 des ersten Bügels 20Recess at the
second end 22 of the first bracket 20th - 5050
- SickeBeading
- 5252
-
Flanke der Sicke 50Flank of the
bead 50 - 5454
- BewegungMove
- 6060
- Spannschraubeclamping screw
- 6262
- Kopf der Spannschraube 40Head of the clamping screw 40
- 6464
- Gewinde an der Spannschraube 40Thread on the clamping screw 40
Claims (8)
- Pipe clamp (10), comprising:a clamp body having a first bracket (20) and a second bracket (30), for enclosing and supporting a pipe or a hose;tensioning means (26, 60) for connecting and contracting a first end (21) of the first bracket (20) and a first end (31) of the second bracket (30);a hook means (42) formed integrallly with the second end (22) of the first bracket (20) and formed by a bent edge portion (23) at the second end (22) of the first bracket (20), and a corresponding second hook means (43) formed integrally with the second end (32) of the second bracket (30) and formed by a bent edge portion (33) at the second end (32) of the second bracket (30), for positively connecting the second ends (22, 32) of the brackets (20, 30),characterized bya window-shaped recess (49) at the second end (22) of the first bracket (20);a protruding portion (48) at the second end (32) of the second bracket (30) configured to engage the window-shaped recess (49) at the second end (22) of the first bracket (20).
- Pipe clamp (10) according the preceding claim, wherein the second end (22) of the first bracket (20) and the second end (32) of the second bracket (30) are configured to positively inhibit, in the intended positive connection of the hook means (42, 43), a movement of the second ends (22, 32) of the brackets (20, 30) relative to each other in a direction parallel to the central axis (18) of the pipe clamp (10).
- Pipe clamp (10) according to the preceding claim, wherein the protruding portion (48) is configured tongue-shaped and is provided to engage in an interspace between the first bracket (20) and a pipe (12) inserted into the pipe clamp (10).
- Pipe clamp (10) according to the preceding claim, wherein the recess (49) is delimited in the axial direction by two pleats (50) protruding towards the outside of the pipe clamp (10).
- Pipe clamp (10) according to one of the preceding claims, wherein the tensioning means (26, 60) articulatedly connects the first end (21) of the first bracket (20) and the first end (31) of the second bracket (30).
- Pipe clamp (10) according to the preceding claim, wherein the tensioning means comprises a screw (60) protruding an elongated hole (36) at the first end (31) of the second bracket (30) and engaging a thread (26) at the first end (21) of the first bracket (20).
- Pipe clamp (10) according to the preceding claim, wherein a dimple (38) for at least partially accommodating the head (62) of the screw (60) is provided at the first end (31) of the second bracket (30).
- Pipe clamp (10) according to one of the preceding claims, wherein the first hook means (42) and the second hook means (43) do not form a latching connection.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012106256.0A DE102012106256B4 (en) | 2012-07-11 | 2012-07-11 | pipe clamp |
PCT/DE2013/100256 WO2014008892A1 (en) | 2012-07-11 | 2013-07-10 | Pipe clamp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2872808A1 EP2872808A1 (en) | 2015-05-20 |
EP2872808B1 true EP2872808B1 (en) | 2017-11-29 |
Family
ID=49080617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13753546.4A Active EP2872808B1 (en) | 2012-07-11 | 2013-07-10 | Pipe clamp |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2872808B1 (en) |
DE (2) | DE102012106256B4 (en) |
WO (1) | WO2014008892A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017002327B4 (en) * | 2016-04-11 | 2021-05-27 | Mann+Hummel Gmbh | Filter device |
US10393290B2 (en) | 2017-05-22 | 2019-08-27 | Erico International Corporation | Clamp for circular objects |
DE202017107712U1 (en) | 2017-12-19 | 2018-01-09 | Dipa Gmbh | Pipe clamp with joint |
DE102020209227A1 (en) | 2020-07-22 | 2022-01-27 | Metallwarenfabrik Marktoberdorf Gmbh & Co. Kg | Pipe clamp for attaching a pipe to a wall |
DE202024100391U1 (en) | 2024-01-25 | 2024-01-31 | Edgar Emil Sinn | pipe clamp |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2193426A (en) * | 1938-07-12 | 1940-03-12 | Lazarides Platon | Pipe clamp |
US3352582A (en) * | 1966-09-12 | 1967-11-14 | John Wood Company | Swivel type hose clamp for connection to the hose of a gasoline dispensing apparatus |
DE3235329C1 (en) | 1982-09-24 | 1984-02-16 | Rasmussen Gmbh, 6457 Maintal | Screwless band clamp |
DE4213864C2 (en) | 1992-04-27 | 2000-05-11 | Hilti Ag | Pipe clamp that can be hinged open |
DE4237674A1 (en) | 1992-11-07 | 1994-05-11 | Hilti Ag | Pipe clamp |
AT398237B (en) * | 1993-02-23 | 1994-10-25 | Mke Metall Kunststoffwaren | PIPE CLAMP |
AT398613B (en) * | 1993-04-05 | 1995-01-25 | Forster Franz Ing Gmbh | CLAMP |
DE59600564D1 (en) | 1995-08-25 | 1998-10-22 | Hilti Ag | Pipe clamp |
DE29812939U1 (en) * | 1998-07-21 | 1999-11-25 | Wemefa Horst Christopeit Gmbh | Pipe clamp |
DE19946042B4 (en) | 1999-09-25 | 2007-10-11 | Hilti Ag | pipe clamp |
DE102004032053B4 (en) | 2004-07-01 | 2007-12-27 | Edgar Emil Sinn | Pipe clamp with integrated snap lock |
DE102007058577A1 (en) * | 2007-12-05 | 2009-06-10 | Fischerwerke Gmbh & Co. Kg | Pipe clamp has two clamp handles, where every clamp handle is assigned one end that is articulated and mounted to another end, and articulated ends of clamp handles are curved in hook-shaped, circular or spiral-shaped manner |
FR2934021B1 (en) * | 2008-07-18 | 2010-08-27 | Caillau Ets | TIGHTENING NECK WHOSE BELT INCLUDES TWO CONNECTED PORTIONS BETWEEN THEM |
DE102010053357A1 (en) * | 2010-12-03 | 2012-02-09 | Daimler Ag | Pipe clip for supporting pipe, has clamp brackets with hinge plates hooked with one another to interconnect clamp brackets in closed region, where contact surface of hinge plates includes angle passing through closed region |
-
2012
- 2012-07-11 DE DE102012106256.0A patent/DE102012106256B4/en not_active Expired - Fee Related
-
2013
- 2013-07-10 DE DE112013003473.5T patent/DE112013003473A5/en not_active Withdrawn
- 2013-07-10 WO PCT/DE2013/100256 patent/WO2014008892A1/en active Application Filing
- 2013-07-10 EP EP13753546.4A patent/EP2872808B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
EP2872808A1 (en) | 2015-05-20 |
DE102012106256B4 (en) | 2014-11-13 |
DE112013003473A5 (en) | 2015-03-26 |
WO2014008892A1 (en) | 2014-01-16 |
DE102012106256A1 (en) | 2014-02-06 |
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